Someone in the U.S. has a stroke every 40 seconds and there are 795,000 strokes in the U.S. every year.

The director of Corewell Health’s Comprehensive Stroke Center in Southeast Michigan, Dr. Revecca Grysiewicz, says they use the acronym FAST in signs to look for in a stroke.

F for face, which is any asymmetry of the face when someone is smiling,” Grysiewicz said. “A stands for arms. Is there any drooping or drift in the arms when you extend both arms out? S stands for speech. Is there any slurred speech, difficulty getting words out, difficulty understanding speech? And T stands for time, because we want individuals to call 911 and get to the emergency room.”

Grysiewicz says risk factors for stroke are high blood pressure, diabetes, high cholesterol, obesity, inactivity, and smoking.